Nissan H engine

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The Nissan H series of automobile engines is an evolution of the Nissan "R" engine which was based on the 3 main "G" 1.5l used in the 1960s. Both straight-4 and straight-6 versions were produced, it is a pushrod OHV design with iron block, early models with an iron head, later models with aluminum head. Versions of this motor have been used in many Nissan autos and forklifts, well into the eighties and a version called H20II is still in production today. The SD diesels are based on this series of motors (bore spacing and basic block layout)

Inline-4

H

The basic H is a 1.9 L (1883 cc) engine produced from 1962 for Nissan's Cedric. Bore was 85 mm (3.3 in) and stroke was 83 mm (3.3 in). The 8.0:1 compression version produced 92 hp (69 kW) and 117 ft·lbf (159 Nm), while a high-compression engine (8.5:1) produced 95 hp (71 kW) and 120 ft·lbf (163 Nm).

Applications:

• 1962 Nissan Cedric 31 (high-compression)
• 1962-1965 Nissan Junior 40
• 1962-1965 Nissan Caball C141

H20

The H20 is the most-common member of the family. Displacing 2.0 L (1982 cc) thanks to a larger (87.2 mm) bore, all H20 engines produced 99 hp (74 kW) and 123 ft·lbf (167 Nm).

Applications:

• 1966-1968 Nissan Junior 41
• 1966 Nissan Caball C142
• 1967 Nissan Caball C240
• 1968 Nissan Junior 140
• 1967 Nissan Clipper T65
• 1965 Nissan Cedric P130
• 1980-1982 Nissan Urvan

Also N230S, T40, forklifts and other machinery

H16(R16)

The R16 motor utilised essentially the same block as the H20, but a shorter piston stroke resulted in a capacity reduction of 387cc. The R16 was later named a H16. The "R" motor made the switch from 3 to 5 main bearings during its life for improved reliability, and the H20 was developed from this arrangement. The R/H16 bore and stroke is 87.2mm x 66.8mm producing 1595cc, 8.0:1 compression, 147kgs/324 lbs +/-90HP

Applications: The R16 motor was used in the SP(L)-311 1600 Datsun Fairlady Roadster, the R(L)411 SSS Bluebird, and later the N140 Datsun Junior.

U20

The U20 was similar to the H20 but with an SOHC cylinder head designed by Prince. It was used only in the Datsun Fairlady SR311. The U20 produces 150 hp.

Straight-6

H30

The H30 is a 3.0 L (2974 cc) straight-6 version produced from 1965. Bore was 83 mm (3.3 in), and stroke was a long 100 mm (3.9 in), producing a very undersquare design. Output was a low-revving 120 hp (97 kW) and 173 ft·lbf (235 Nm). The H30 is basically an H20 with 2 extra cylinders.

Applications:

• 1965 Nissan President H150
• Nissan C80

This motor is used in large forklifts

See also

• List of Nissan engines
• Nissan G engine